58results about How to "Control rot" patented technology

The invention discloses a natural volatile solid fresh-keeping agent for fruit and vegetables and a preparation method thereof. The fresh-keeping agent is prepared by mixing main raw material and adjuvants at a certain ratio in parts by weight, and taking rice flour and maltodextrin as a wall materials and essential oil mixed with natural spices as a core material; ingredients of the main raw material are rice flour, maltodextrin and essential oil mixed with natural spices, and the adjuvants comprise an antiseptic, an adhesive, a crisp-keeping agent, an emulsifier and an ethylene receptor inhibitor. The natural volatile solid fresh-keeping agent for fruit and vegetables has the main advantages of realizing freshness keeping of fruit and vegetables by volatilizing the essential oil mixed with natural spices and 1-MCP which respectively contact surfaces of fruit and vegetables; employing microcapsule technology to embed the essential oil mixed with natural spices and the 1-MCP to effectively control volatilization rate of the essential oil mixed with natural spices and the 1-MCP, improve utilization rate of effective ingredients and solve freshness-keeping technical problems of fruit and vegetables in the course of transport; and the product made from natural materials is safe and nontoxic. See the accompanying drawings of the abstract for processing technology of the fresh-keeping agent.

The invention discloses a red kiwifruit room temperature storage and preservation operating method which comprises the following four steps: picking fresh red kiwifruits, preparing a preservative, dipping the fresh fruits and preserving the fresh fruits. The problems that the fresh red kiwifruits are difficult in room temperature storage and difficult in preservation are solved by utilizing a natural preservation method. According to the preservation operating method disclosed by the invention, due to two times of preservative liquid dipping treatment, dual-layer protection of a high-activity probiotics layer and a moisturizing and preservation antibacterial film is realized, skin shrinkage and fruit rot of the red kiwifruits are obviously controlled, the room temperature storage period and shelf life of the red kiwifruits are effectively prolonged, and the commodity value and economic benefits are improved; and moreover, the method can be popularized to be used in other fresh fruits.

The invention discloses a grape eco-friendly precise preservation fresh-keeping method and an application thereof. The method comprises spraying an eco-friendly preservation agent to grapes, carryingout sugar-degree non-injurious classification, fast pre-cooling the grapes for 6-10h in 3-5h after harvest, pre-cooling the grapes at 0+ / -0.5 DEG C for 4-8h, carrying out 0.5-1.5 microliters per liter1-MCP treatment, sealing a small basket through a minimal modified atmosphere anti-fog fresh-keeping bag with thickness of 15-30 micrometers, carrying out low temperature domestication at -1.5 to -1.2 DEG C for 6-10h, carrying out storage under precise control of a temperature of -1.5 to -1.2 DEG C or -2.3 to -2.0 DEG C for 3-5 months, adjusting a warehouse temperature to 0 to 0.5 DEG C, carryingout recovery for 48 to 72 hours, carrying out recovery again at 10 + / -0.5 DEG C for 24 to 36 hours, removing the outer package, carrying out high concentration 1-MCP treatment and carrying out commercial packaging. Through combination of the above technology and process parameters, the rot percentage of grapes is significantly reduced and the quality is improved.

The invention discloses a plant source pesticide for preventing and treating apple tree rot and belongs to the technical field of prevention and treatment of fruit tree diseases and insect pests. The pesticide comprises the following raw materials: Chinese prickly ash, garlic, aloe, clove, radix isatidis, an antifreezing agent, a wound protective agent and an anti-corrosive agent. The plant source pesticide is simple in prescription and process, as long as two years in preservation period, low in cost and good in prevention and treatment effect, has the characteristics of being free of residues, free of drug resistance (tolerance) and free of pollution, has a remarkable prevention and treatment effect on the apple tree rot, is above 95% in prevention rate, also has a certain prevention and treatment effect on fungous diseases such as anthracnose, ring spot, powdery mildew and dark spot which are harmful to apple trees, and also can be used for quickening healing of scab wound of the apple trees while preventing and treating the apple tree rot.

The invention discloses a microcapsule for preventing and treating plant diseases. The microcapsule contains pseudomonas fluorescens, a protective agent and a carrier; and the protective agent is selected from one or two or more of maltodextrin, sodium caseinate and sodium carboxymethyl cellulose. The invention further discloses a preparation method and application of the microcapsule. The microcapsule containing the pseudomonas fluorescens is formed by using liquid fermentation to produce the pseudomonas fluorescens serving as an effective component and organically compounding the carrier, the protective agent and the pseudomonas fluorescens. The microcapsule disclosed by the invention can be used for preventing and treating various plant soil-borne diseases and particularly has a bettereffect for preventing and treating vegetable bacterial wilt and plant wilt; in addition, compared with a living bacterial preparation produced by using a traditional method, the microcapsule has stronger vitality and stress tolerance as well as more effects and functions and is more suitable for production application. The problems that large-scale production cannot be realized and dust is generated in production and application processes due to short shelf life and high death rate during processing of a current biopesticide containing the pseudomonas fluorescens are solved.

The invention discloses a specific liquid fertilizer for beet planting and a preparation method thereof. The liquid fertilizer is prepared from more than 20 raw materials such as medical stone powder, CW strain, honey and captan through twice fermentation. The specific liquid fertilizer for beet planting has the characteristics that the sugar content of beet is remarkably improved, and the sugar content of beet is increased by 1 to 3 percent.

The invention relates to a botanical antiseptic pesticide prepared by the following materials: 6-8% by weight of sulphur, 3.5-5.5% by weight of rosin, 2.5-4.5% by weight of sodium carbonate, 4-6% by weight of calcium oxide and the balance of water and tar. The pesticide is prepared by the following steps: grinding sulphur, rosin, sodium carbonate and calcium oxide to powder; adding powder into reaction kettle in proportion and then mixing evenly under the temperature of 60-80 DEG C; adding water or tar in proportion and mixing; filtering medical solution with water obtained from step c; finally bottling filtered solution or medical solution with tar. The invention has the advantages of good plant-pathogen prevention effect and long controlling period.

The invention belongs to the technical field of biological control, particularly relates to disinfection liquid for rejuvenation and greening of fruit trees and a preparation method of the disinfection liquid. The disinfection liquid is prepared from raw materials: by weight, 10-15% of urea, 5-10% of monopotassium phosphate, 15-20% of saccharose, 10-12% of ferrous sulfate, 3-5% of sodium borate, 2-4% of EDTA chelated zinc, 0.01-0.02% of benzoic acid, 20-40% of walnut green seedcase extract liquid, 0.5-1% of concentrated sulfuric acid, 0.5-1% of absolute ethyl alcohol and the balance being distilled water. The disinfection liquid can improve nutrition condition of the fruit tree, improve symptom iron-deficiency, improve stress resistance of fruit trees, effectively prevent diseases such asring rot, decay, alternaria leaf spot of fruit trees, and achieve rejuvenation of tree bodies and improve yield and income.

The invention discloses a green accurate preserving and fresh-keeping method for blueberries and an application thereof. The method comprises the following steps: spraying treatment is carried out forblueberries with a before-harvest biological antistaling agent, fruits are nondestructively graded according to sizes, the fruits are harvested and placed in a precooling refrigerator in 3-5 hours, rapid precooling is carried out for 6-10 hours, precooling is carried out for 4-8 hours at 0+ / -0.5 DEG C, and then an antifog fresh-keeping bag whose thickness is 20-35[mu]m for slightly controlled atmosphere is used as an outer lining of a small basket for sealing; low temperature domestication is carried out at -1.6 to -1.2 DEG C for 6-8 hours, storage is carried out for 60-70 days with accuratetemperature control at -0.8 to -0.5 DEG C or -0.5 to -0.2 DEG C, the temperature of the refrigerator is adjusted to 0-0.5 DEG C, awaking time is 48-72 hours, awaking is carried out again at 10+ / -0.5 DEG C for 24-36 hours, external packing is removed in order to carry out high-concentration 1-MCP fumigating treatment, and commercial package of blueberries is carried out. Combination of technology and technological parameter is used, in order to substantially maintain original quality of blueberries and improve quality of blueberries.

The invention discloses an antiseptic and fresh-keeping agent for litchi. In parts by weight, the antiseptic preservative components are: 20-50 parts of prochloraz, 10-30 parts of nano-silver sol, 5-10 parts of butanediol, 1-5 parts of surfactant, carboxymethyl shell Glycan / TiO 2 1-5 parts of composite material, 1-5 parts of glycosyl trehalose, 0.5-1 part of preservative, 0.1-0.5 part of carrageenan and 100-800 parts of water. The present invention also provides a preparation method of the above-mentioned antiseptic and antistaling agent and a method for using the above-mentioned antiseptic and antistaling agent to keep litchi fresh. It can significantly control the skin shrinkage and fruit rot of litchi through the combination of sterilization and moisturizing technology, effectively prolong the storage period and shelf life of litchi, improve commodity value and economic benefits; at the same time combined with ultrasonic soaking treatment, chemical preservation and physical preservation The bactericidal compound is safe and non-toxic; the preparation method is simple, efficient and safe, and has broad application prospects.

The invention discloses a method for storing and fresh keeping of ginkgo biloba. The method comprises the following steps: (1) sorting ginkgo biloba in an optimum gathering period, peeling the sorted ginkgo biloba, cleaning and disinfecting the peeled ginkgo biloba with a polyhexamethylene guanidine hydrochloride solution, drying the cleaned and disinfected ginkgo biloba at a room temperature by airing, and removing ginkgo biloba with mechanical damages, empty ginkgo biloba, wormy ginkgo biloba and decomposed ginkgo biloba; (2) placing the ginkgo biloba processed in the step (1) in the condition of controlling the humidity with dry fog, controlling the relative humidity to be 93-98%, controlling the moisture content atomized granules to be 2-10 mum without falling water wetting / dew condensation phenomena, and storing the ginkgo biloba at the temperature of 0-4 DEG C. According to the method disclosed by the invention, the phenomena of mildew and rot and calcification caused by dehydration in the storage process of the ginkgo biloba can be effectively avoided. The method disclosed by the invention is used for storing the ginkgo biloba, after being stored for 360 days, the mildew and rot rate of the ginkgo biloba is below 5%, the ginkgo biloba does not dehydrate, the glutinous performance of the ginkgo biloba does not fall, and the quality of the ginkgo biloba is maintained better.

The invention discloses a special double-film double-control slow-release fertilizer for corn and a preparation method thereof, belonging to the technical field of fertilizers. The special double-film double-control slow-release fertilizer for corn comprises a base fertilizer, an additional fertilizer and an ear fertilizer. The base fertilizer is prepared from the following raw materials in parts by weight on dry basis: livestock / poultry manure, wheat straw, Enteromorpha, kaolin, manioc waste, edible fungus residue, inorganic fertilizer and sterilizing component. The additional fertilizer is prepared from urea, diammonium phosphate, ammonium chloride, potassium chloride, potassium sulfate, gypsum and urea formaldehyde. The ear fertilizer is prepared from rare earth, urea, diammonium phosphate, potassium sulfate and pesticidal component. The special double-film double-control slow-release fertilizer for corn can greatly increase the corn yield and lower the occurrence of diseases and pests.

The invention discloses a prevention method for apple rot. The prevention method for the apple rot achieves apple rot prevention through uniformly smearing garlic after scraping scabs. The prevention method for the apple rot is capable of effectively preventing the apple rot, is economical, pollution free and environmental friendly, and is capable of producing high-end pollution-free food and organic fruit.

The invention relates to a formaldehyde-free fur leather tanning method, and belongs to a fur tanning technique. The method comprises the following steps: immersing in water, washing with water, removing meat, softening and immersing in acid before tanning; and washing or dry-cleaning, drying, dampening, spreading, ironing hairs, shearing hairs and finishing after tanning. The method is characterized in that the tanning agent used in the tanning process is composed of the following components in percentage by weight: 12-18% of oxazolidine compound, 3-9% of penetrant, 2-5% of moisturizer, 5-9% of softener and the balance of water, wherein the sum of the weight percents of the components is 100%; the oxazolidine compound is 3-hydroxyethyl-3-oxazolidine; the penetrant is fatty alcohol polyethylene ether; the moisturizer is glucose; and the softer is castor oil polyethylene ether. After the implementation of the method, a tanning effect identical to the tanning effect by using formaldehyde is obtained by adopting the oxazolidine compound to replace toxic and harmful formaldehyde used in the prior art; furthermore, the rotting phenomenon of the fur leather is effectively controlled; and more importantly, the components in the formula are not reported to be toxic or harmful.

The invention discloses a method for synthesizing silver nanoparticles through pseudomonas poae acellular supernatant. The method comprises the following steps of (1) culturing pseudomonas poae in NB culture mediums, and collecting bacterium suspension liquid; (2) centrifuging the bacterium suspension liquid, and collecting supernatant so as to obtain acellular supernatant; and (3) adding the acellular supernatant to an AgNO3 solution, performing centrifuging on obtained reaction liquid, performing washing, and performing vacuum freeze drying so as to obtain silver nanoparticle granules. The prepared silver nanoparticle granules are stable in structure and good in dispersibility, have good biological compatibility, have high in vitro and in vivo antibacterial activity on Dickeya dadantii CZ1501, and can be prepared into ecology-friendly type gold nanoparticle bacteriostatic agents good in biocompatibility to be used for preventing and treating stem rot of sweet potatoes, burden of traditional chemical bactericides to environment is alleviated, and the method has favorable popularization prospects.

The invention relates to a botanical antiseptic pesticide prepared by the following materials: 6-8% by weight of sulphur, 3.5-5.5% by weight of rosin, 2.5-4.5% by weight of sodium carbonate, 4-6% by weight of calcium oxide and the balance of water and tar. The pesticide is prepared by the following steps: grinding sulphur, rosin, sodium carbonate and calcium oxide to powder; adding powder into reaction kettle in proportion and then mixing evenly under the temperature of 60-80 DEG C; adding water or tar in proportion and mixing; filtering medical solution with water obtained from step c; finally bottling filtered solution or medical solution with tar. The invention has the advantages of good plant-pathogen prevention effect and long controlling period.

The present invention discloses applications of an acid protease in preparation of a pathogenic bacterium inhibition preparation. According to the present invention, on the basis of the successful recombination expression purification of the acid protease P6281 of Trichoderma harzianum, the inhibition effect of the acid protease P6281 on animal and plant pathogenic fungi is first verified, and the acid protease P6281 is firstly applied in the fresh keeping of fruits and vegetables, the biological prevention and control, and the storage and mildew prevention of crops; the used protease is derived from Trichoderma harzianum, is non-toxic and safe, and cannot cause environment pollution; the problems that the direct application of the Trichoderma harzianum preparation is unsuitable for the growth of fruits and vegetables, the direct application of the Trichoderma harzianum preparation can cause the rotting of fruits and vegetables, and the like are overcome; and the acid protease can be combined with the commonly-used fruit and vegetable fresh-keeping technology, such that the gray mold of fruits and vegetables during the storage can be controlled, and the postharvest decay can be effectively controlled.

The invention relates to the technical field of fruit and vegetable preservation, and discloses a passionflower herb antistaling agent. The passionflower herb antistaling agent is prepared from, by weight, 20-100 parts of prochloraz and / or iprodione, 10-30 parts of butanediol, 1-5 parts of glycosyl trehalose, 0.1-1 part of sodium hyaluronate, 0.1-1 part of thickener, 5-10 parts of surfactant and 100-500 parts of water. The invention further provides a preparation method of the passionflower herb antistaling agent and a method for conducting preservation treatment on passionflower herb through the antistaling agent. The antistaling agent can significantly control epidermis shrinking and fruit rotting of the passionflower herb through a technology of combining sterilizing and moisturizing, the storage period and shelf life of the passionflower herb are effectively prolonged, and the commodity value and economic benefit are improved; meanwhile, by means of the antistaling agent and negative pressure or ultrasonic wave compound soaking treatment, chemical preservation and physical sterilization are compounded, safety is achieved, and toxicity does not exist. The preparation method of the passionflower herb antistaling agent is simple, efficient, safe and wide in application prospect.

The invention relates to the technical field of fruit and vegetable storage and preservation, and discloses a litchi preservation agent. In parts by weight, the preservative components are: 20-50 parts of iprodione, 10-30 parts of nano-silver sol, 5-10 parts of ethylene glycol, 1-5 parts of surfactant, carboxymethyl chitosan Sugar / TiO 2 1-5 parts of composite material, 1-5 parts of glycosyl trehalose, 0.1-0.5 parts of thickener and 100-800 parts of water. Also provided are a preparation method of the above-mentioned antistaling agent, and a method for using the above-mentioned antistaling agent to preserve the litchi. The antistaling agent can significantly control the skin shrinkage and fruit rot of lychees through the combination of sterilization and moisturizing technology, effectively prolong the storage period and shelf life of lychees, and improve commodity value and economic benefits; Treatment, chemical preservation and physical sterilization are combined, safe and non-toxic; the preparation method is simple, efficient and safe, and has broad application prospects.

The invention relates to the field of fruit and vegetable preservation, and specifically relates to a method of preserving blueberry with intermittent ozone processing. The method includes: performing precooling processing after harvesting blueberry, and putting the blueberry in refrigeration storage to perform intermittent ozone processing. The intermittent ozone processing includes performing ozone processing for 50-70 min for the first time by using the ozone gas with the concentration of 2-3 ppm, and performing ozone processing once by using the ozone gas with the same concentration every several days until the storage period finishes, wherein each processing time shortens several minutes based on the processing time of last time. Compared with low temperature storage, the healthy fruit rate of blueberry is greatly improved by using the method of the invention, and the quality of blueberry is improved. The method has no chemical agent residual, and meets the requirement of food safety.

The invention provides a method for keeping litchi fresh by cane sugar and an application of the method, wherein the method comprises the steps: spraying a 1-10 [mu]mol / L cane sugar aqueous solution on the surfaces of litchi fruits, and packaging and storing by using a polyethylene plastic film bag, thereby lowering the polyphenol oxidase activity and active oxygen content of the litchi, effectively controlling the browning and rotting of the litchi peels. The fresh-keeping method disclosed by the invention is simple to operate, low in cost, green, safe and high in application efficiency, the storage period of the litchis is effectively prolonged, and the economic loss of the litchis in a circulation link is reduced.

The invention provides a cuttage planting method simple and easy in operation and high in survival rate and aims to overcome the defect of low survival rate of a vegetative propagation technique for artemisia ordosica cuttage planting in the prior art. The method has advantages that on the one hand, by mixing of raw materials including coarse sand, urea, composted farmyard manure, peat and the like in a cuttage planting process, the survival rate in artemisia ordosica cuttage is increased; besides, by control of adding quantities of various materials in appropriate ranges, optimal synergisticeffects of the materials can be achieved, and the survival rate in artemisia ordosica cuttage can be further increased; finally, by adding of carbendazol wettable powder and Bordeaux mixture for aftertreatment in a cuttage process, bactericidal and pesticidal effects in the cuttage process can be further enhanced, the rot disease and root rot can be better prevented and treated, influences of disease and pest damage are reduced, disease resistance of plants is improved, and the survival rate in cuttage is increased.

The invention discloses a grape green precise anti-corrosion and fresh-keeping method and its application. The method is spraying the green pre-harvest pre-harvest agent for grapes, grading according to the sugar content without damage, and rapidly pre-cooling for 6-10 hours within 3-5 hours of harvesting. Pre-cool at 0±0.5°C for 4-8 hours, and treat with 0.5-1.5μL / L 1-MCP at the same time, and seal the small basket with a micro-atmosphere anti-fog fresh-keeping bag with a thickness of 15-30μm, and store at -1.5-1.2°C Acclimate at low temperature for 6-10 h. Precise temperature control ‑1.5~‑1.2℃ or ‑2.3~‑2.0℃, after storage for 3 to 5 months, adjust the storage temperature to 0~0.5℃ for 48~72 hours, and 10±0.5℃ for 24~ After 36 h, the outer packaging was removed for high-concentration 1-MCP treatment and then packaged commercially. Through the combination of the above technologies and process parameters, the mold rot rate of grapes can be significantly reduced and the quality can be improved.

The invention aims to solve the problems of few populus diversifolia provenance, high seedling culture labor intensity, high cost, low seed germination rate and high seedling malformation rate in theprior art and provides an innovative populus diversifolia seed seedling culture method. On the one hand, by mixing populus diversifolia seeds with specific raw materials like fine sand, urea and rotten farm manure in the process of seeding, germination rate of the populus diversifolia seeds is increased, and seedling distortion rate is reduced; on the other hand, by strictly controlling adding amount of various raw materials within a proper range, optimal synergistic effect of the raw materials is brought into play, so that the germination rate of the populus diversifolia seeds is increased, and the seedling distortion rate is reduced; finally, by sequentially adopting carbendazim wettable powder and Bordeaux mixture for spraying aftertreatment after seeding, effects of increasing the germination rate of the populus diversifolia seeds and reducing the seedling distortion rate are further realized. The method is simple in operation, easy-to-get in raw material and suitable for large-scale popularization and application and has good economic benefit and environmental benefit.

The invention discloses a preparation method and application of a chitosan-fish skin gelatin composite film coating agent, and relates to the technical field of food preservation. The preparation method comprises the following steps: (1) adding fat-removed dry fish skin into an HCl solution, carrying out soaking treatment, washing to be neutral, adding deionized water, and carrying out ultrasonic hydrolysis to obtain hydrolysate; and (2) adding glycerol, chitosan and epsilon-polylysine into the hydrolysate to obtain a mixture, and stirring and mixing the mixture to obtain the chitosan-fish skin gelatin composite film coating agent. The chitosan-fish skin gelatin composite film coating agent prepared by the preparation method disclosed by the invention can be used for remarkably reducing water loss, shrinkage and decay of passion fruits in a storage period, improving the storage quality of the fruits and prolonging the storage period of the fruits.

The invention relates to a preparation method for a natural antibacterial agent. The method comprises the following steps: crushing cuminum grains and sieving by 60-80 mesh sieves to obtain cuminum powder; and adding the cuminum powder into a distillation flask of a Clevenger distillation device, adding distilled water and heating though a temperature control jacket on the device, performing water distillation at the temperature of 93-96 DEG C and obtaining the distillate after 1.5-2.5 h, and using an oil-water separator to remove the water in the distillate, so as to obtain the active extract. According to the invention, the method is simple, the raw material is safe and edible, the cost is lower, and the obtained extract has strong bacteriostatic activity to germination of spores and growth of myceliums which are harmful to food microorganisms.

The invention relates to the technical field of pesticide fungicides, in particular to a chemical bactericide pesticide capable of preventing blueberry fruit rot. The chemical bactericide pesticide isprepared from the following raw materials in percentage by weight: 50.0% of pyraclostrobin and DX110512(N-(5-trifluoromethyl-3,4-thiadiazole-2-yl)-2-fluorobenzamide, 2.2% of uniconazole, 5.0-15.0% ofauxiliaries, and 32.8-42.8% of a filler carrier. The bactericidal composition adopts three medicaments as main ingredients, and is matched with auxiliaries and the filler carrier to achieve the effects of having compensatory advantages and supplementing each other. The preparation is simple in process, the added raw materials are completely converted into products, the yield is high, no three wastes are generated, and the control effect on blueberry fruit rot is effectively improved.

The present invention discloses a liquid preservative for litchi storage. The liquid preservative comprises the following components in parts by weight: 20-50 parts of iprodione, 10-30 parts of pyraclostrobine, 10-30 parts of nanometer silver colloid, 5-10 parts of ethylene glycol, 1-5 parts of a surfactant, 1-5 parts of carboxymethyl chitosan, 0.5-1 part of sorbic acid, 0.1-1 part of sodium hyaluronate, 0.1-0.5 part of carbomer and 100-800 parts of water. The present invention also provides a preparation method of the preservative and a method of preserving and treating litchi. By combining the technologies of sterilization and moisture preservation, the liquid preservative can significantly control the occurrences of litchi skin shrinkage and fruit decay, effectively extends the storage period and shelf life of the litchi, and improves the commodity value and economic benefits. The preservative and negative pressure compound soaking treatment are used at the same time, the chemical preservation and physical sterilization are compounded, and the liquid preservative is safe and non-toxic. The preparation method is simple, high-efficient and safe, and suitable for broad prospects.

The invention relates to the technical field of weed control and in particular relates to a method for weeding by using pelargonium roseum wastes. The method comprises the following steps: selecting pelargonium roseum wastes subjected to steam pressing oil extraction treatment, and stacking the wastes in a wooden container in a centralized manner, so that the moisture content of the pelargonium roseum wastes is 80% of air humidity during steaming; covering the steamed pelargonium roseum wastes on the soil surface which is at least 10 cm away from the plant cultivation part according to the thickness of 1-3 cm, and maintaining the humidity of the pelargonium roseum wastes to be 70% of the steaming humidity within 15 days; maintaining the temperature of the pelargonium roseum wastes to be 30-40 DEG C within another 15 days, and finally entering a natural management phase. The method disclosed by the invention is simple, feasible, low in cost and good in weeding effect, and the wastes are utilized.